Epithelioid Schwannomas: An Analysis of 58 Cases Including
Epithelioid schwannomas, even those with atypical features, are benign and do not constitute a histologic continuum with epithelioid malignant peripheral nerve sheath tumors, which typically occur in deep soft tissues and have more anaplastic features.
Pathology Outlines - Schwannoma
2022年1月4日 · Epithelioid schwannoma: Single or small groups of epithelioid schwann cells with moderate amphophilic cytoplasm and occasional nuclear pseudoinclusions ( Am J Surg Pathol 2016;40:704 ): Myxoid to hyalinized stroma, often with thick walled vessels
Epithelioid schwannoma of the skin displaying unique …
2017年1月19日 · Epithelioid schwannoma is defined conceptually as the benign counterpart of epithelioid malignant peripheral nerve sheath tumor (MPNST) [1 – 4] and frequently poses a diagnostic challenge to all clinicians and pathologists, as this very rare entity is extremely difficult to diagnose by a morphological examination alone, i.e. haematoxylin and eos...
Epithelioid Cutaneous Mesenchymal Neoplasms: A Practical …
Epithelioid schwannoma is a rare variant of schwannoma and is composed predominantly or exclusively of epithelial-appearing Schwann cells. This neoplasm usually occurs in adults [ 61 ], and principally in the dermis/subcutis of the upper …
A rare histopathological variant of Schwannoma with rosette-like ...
2023年8月8日 · Epithelioid schwannomas are a rare variant of schwannoma described in the literature 18,19. They contain no true epithelial components, that is, glandular or squamous differentiation 18. Hart’s analysis of 58 cases of epithelioid schwannoma showed that most cases consisted predominantly of epithelioid cells, with variable amounts of stroma 20 ...
Epithelioid Schwannoma (Concept Id: C5554894) - National …
Epithelioid schwannoma (1295253009); Epithelioid schwannoma (1295255002) Definition A schwannoma characterized by the presence of epithelioid cells with eosinophilic cytoplasm, within a myxoid and/or hyalinized stroma.
A unique case of epithelioid schwannoma; rare soft tissue tumor
2018年11月1日 · Epithelioid schwannoma is a rare histological subtype of schwannoma that can cause diagnostic challenges. Most reported cases in the literature were located predominantly in the dermis and subcutaneous tissue of the extremities and trunk.
The American Journal of Surgical Pathology - LWW
Epithelioid schwannomas, even those with atypical features, are benign and do not constitute a histologic continuum with epithelioid malignant peripheral nerve sheath tumors, which typically occur in deep soft tissues and have more anaplastic features.
Epithelioid schwannoma with diffuse nuclear pseudoinclusions: a …
Epithelioid schwannomas are a rare variant of schwannoma, consisting either exclusively or predominantly of epithelioid Schwann cells. This case demonstrated a tumour from the upper back, situated entirely within the dermis, and surrounded by a fibrous pseudocapsule.
SMARCB1/INI1 Loss in Epithelioid Schwannoma: A ... - PubMed
Epithelioid schwannoma most commonly occurs as a superficial tumor on the extremities or trunk in adults. Loss of SMARCB1/INI1 expression is seen in 42% of tumors. Tumors follow a generally benign clinical course, although recurrence and malignant transformation are infrequent.